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Magnetic and crystallographic properties of sputtered Co-Ni-Zr films on Cr, Mo and W underlayer

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5 Author(s)
Suzuki, H. ; Hitachi Ltd., Kanagawa, Japan ; Tsumita, N. ; Hayashi, M. ; Shiroishi, Y.
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Read and write characteristics and magnetic and crystallographic properties of sputtered Co-Ni-Zr on Cr, Mo, and W underlayers are investigated. The crystal grains of the underlayer and the magnetic layer are rice-like and consist of 2 to 10 columnar subgrains. The coercivity of composite films depends on the size of subgrains, reaching a maximum when the magnetic crystal size is about 40 nm. Media noise is proportional to the square root of the length of the rice-like grains; this can be explained by particle-noise theory

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Magnetics, IEEE Transactions on  (Volume:26 ,  Issue: 5 )